Is that copper and zinc in your pocket?

The wizard scratches his beard for a moment while studying you closely. "Are those strange coins in your pocket what I think they are lad?" he asks. You pull the 48 cents out of your pocket "Aha, they are!" he exclaims, "You see, I have been having trouble sourcing copper and zinc to make my potions." the wizard tells you, "I'll give you that potion for the coins in your hand lad."

'only 48 cents to grow my dick? This place must be too good to be true' You think to yourself "I'll take it!" you say, figuring that even if it's not real you wont miss your pocket change anyway. The wizard hands you a big quill pen and tells you to sign a scroll. "I John Doe hereby agree to give Marlin the Wise all of the copper and zinc coins in my hand, in exchange for one potion of greater manhood." You sign the scroll, when the coins in your hand disappear, and are immediately replaced by a glass vial that contains a liquid similar looking to a cola or root beer.